Screening device.



0. E. SMITH.

SCREENING DEVICE.

APPLICATION FILED DBO. 23, 1910. RENEWED APR. 19, 1912.

2 SHEETSSHBET l.

Patented July 23, 1912.

1,033,628. Tia- WITNESSES arm yams,

ATTORNEYS COLUMBIA PLANOGRAPH co.,wAsmNu'roN, 171C.

0. B. SMITH.

SCREENING DEVICE.

APPLIOATION FILED DEC. 23, 1910. RENEWED APR. 19, 1912.

1,033,628, Patented July 23,1912.

2 SHEET8SHEET 2. E 1 E Q WITNESSES 5 Orm'ce Fay AYWWM ATTORNEYS UNITED STATES PATENT OFFICE.

ORRICE RAY SMITH, 0F KELLOGG, IDAHO, ASSIGNOR OF ONE-HALF TO JOHN FRANCIS CARSON, OF KELLOGG, IDAHO.

SCREENING DEVICE. i 1' Specification of Letters Patent.

Patented July 23, 1912.

Application filed. December 23, 1910, Serial No. 598,953. Renewed April 19, 1912. Serial No. 691,785.

To all whom it may concern.

Be it known that I, ORRICE RAY SMITH, a citizen of the United States, and a resident of Kellogg, in the county of Shoshone and State of Idaho, have invented a new and Improved Screening Device, of which the following is a full, clear, and exact description.

This device relates to a new and improved screening mechanism used in the separation of different sized materials, and may be used at any place where it is desired to separate materials, as, for instance, grain, seed, ores, sand, difierent sized materials, etc.

It has for an object to provide a screen wherein the particles are self-freeing, and wherein the screen sections can be quickly and readily changed.

It has for a further object the providing of means whereby the material caught in the meshes of the screen is readily freed.

I attain these results by positioning a series of screens about a wheel in order to form a drum. These screens, after receiving the substance to be screened, are adapted to fall by gravity against an inclined track, thereby forcing the oversized substance into a receiving launder.

With the above and other objects in view, as will more fully hereinafter appear, the present invention consists in certain novel details of construction and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims.

In the accompanying drawings, forming part of this specification, the reference characters of which indicate corresponding parts in the several figures,-Figure 1 is a plan view looking down upon my improved device; Fig. 2 is a detailed elevation of the rod connecting one end of the track hereinafter described; and Fig. 3 is a cross sectional view taken on the line 33 of Fig. 1. Fig. 4 is a detailed section on line 4-4 of-F-ig. 1.

The framework A has positioned there-.

upon standards B, upon which is mounted a wheel 1, keyed at 2 to a shaft 3. Extending from one side of the outer flange 4 of the wheel 1, is a series of square rods 5, the ends 6 of which are cylindrical in cross section and are revolubly mounted in bosses 7 extending from the opposite side of the wheel 1, and are held in position by means of keys 8. Each of these rods 5 is rigidly affixed to a segmental screen frame 9, carrying a screen 10, which screen is held in position by a ring 11, constituting the section 12. Positioned below the drum formed by the screens, is a pair of parallel tracks 13, the lower ends of which are united by a rod 14, and the upper ends of which are united by means of a reinforcing bar 15.

Below the drum formed by the screen sections 12 and to one side thereof, is a pair of supports 16, attached to the framework A. The track 13 is pivoted at 26, intermediate its length, upon these supports 16.

To a support 17 mounted upon the frame-- work A, are secured threaded screws 18, fastened to said support by'means of nuts 19, and fastened to the track 13 by means of nuts 20. As shown in Fig. 3 the track 13 is concentric with the wheel 1 but the track can be moved into an eccentric position relative to the wheel by adjusting the bolt 18 and nuts 19 with a view to increasing or decreasing the gap between the upper por-. tion of the track and the peripheral face of the wheel. This support or upright 17 also carries an inclined channel 21, which leads the screened material to an over-sized launder 22 in the framework A and at the bottom of the device.

Positioned above the drum formed by the sections 12, is a feed launder 23, which leads the mixed sand, ore or other material from a hopper, not shown, to the topmost points of the revolving screens. Also positioned above the revolving screens, and in the line of motion of these traveling members, is a water sprinkler 24.

Screens having the desired mesh are placed on the different screen frames, and held in position by means of the ring 11. The feed, ore, sand, grain, seed, etc., is then delivered through the launder 23 and falls upon the outside of the screen 10, the under-sized particles falling through the mesh of the screen to the under-sized launder 25, inserted in the open end of the drum. At the same time, the water from the sprinkler 24 washes the oversized particles and carries away any small particles which may have adhered to the over-sized particles. By this means the under-sized material, together with the wash water, is continuously conveyed away through the launder 25 to any desired point. The

track 13 may be swung on its pivot 26,

thereby forming a greater distance between the periphery of the drum formed by the sections and the inclined track. Should this distance be too great, of course the track can be moved in the opposite direction.

As many changes could be made in the above construction and many apparently widely different embodiments of t is invention could be made without departing from the scope thereof, it is intended that all matter contained herein in the above description or shown in the accompanying drawings shall be interpreted illustrative and not in a limiting sense. It is also to be understood that the language used in the following claims is merely intended to cover all the generic and specific features of the invention herein described, and all statements of the scope of the invention, which, as a matter of language, might be said to fall therebetween, and that materials, sizes and relativities of parts are non-essential,

except as called for in the claims.

Having thus described my invention, 1 clalm as new and desire to secure by Letters Patent:

1. In a screening device, a framework,j

a vertically disposed wheel revolubly mounted on said framework, a series of rods spaced about on the rim and projecting from one side of said wheel, a series of screen frames rigidly attached to said rods and adapted to fall out of place at a point in the revolution of the wheel, said frames inter-fitting to form a drum, and a track beneath said drum adapted to stop the fall of said frames.

2. In a screening device, a framework, a member revolubly mounted in said framework, a series of rods spaced about said member and projecting from one side there of, a series of screen frames rigidly attached to said rods, screens mounted in said frames, a track pivoted to said framework, and means whereby the track is moved with reference to the screens, whereby the force of the falling screens is regulated.

3. In a screening device, a framework, a revoluble member mounted on said frame work, and screen pivotally mounted on said member and adapted to fall downwardly under the action of gravity, and means substantially conforming in configuration to said member and limiting the downward swing.

4;. In a screening device, a revolving wheel, a series of pivoted screen sections mounted on said wheel to form a cylindrical drum and adapted to fall away from said wheel, and a movable track disposed partly about said drum and adapted to regulate the force of the fall of said screens.

5. In a screening device, a revolving wheel, a series of pivoted screen sections mounted on said wheel and adapted to fall away from said wheel, a track adapted to regulate the force of the fall of said screens, and means for adjusting said track with relation to the screens.

6. In a screening device, comprising a series of falling screens, a track fulcrumed intermediate its length beneath said screens, and means attached to one end of said track, adapted to clamp the same in adjusted position.

7. In a screening device, a track, screens adapted to fall against said track, and means adapted to regulate the fall of said screens.

8. In a screening device, a revolving body, a screen pivoted to said body and adapted to periodically fall away from the same, and means disposed in the path of said falling screen to limit the fall of the same, and means moving said first-mentioned means to regulate the extent of said fall.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ORRICE RAY SMITH.

l/Vitnesses Torr DURAND, ALBERT CRAY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

